Heating ventilating and air conditioning (HVAC) inner and outer circulation air door capable of regulating fresh air and return air ratio and regulation method of HVAC inner and outer circulation wind door

Abstract

The invention relates to a heating ventilating and air conditioning (HVAC) inner and outer circulation air door capable of regulating fresh air and return air ratio, comprising an outer circulation air inlet, an inner circulation air inlet, an original fixed air door and an air blower pipeline, wherein the outer circulation air inlet and the inner circulation air inlet are connected with one end of the original fixed air door, and the other end of the original fixed air door is communicated with the air blower pipeline; a moveable air door is arranged in the middle of the original fixed air door; and the moveable air door moves in the original air door through a control device and leads the fresh air in the outer circulation air inlet and the return air in the inner circulation air inlet to respectively enter the air blower pipeline, so that the area changes. In the HVAC inner and outer circulation air door, because the moveable air door capable of regulating the fresh air and the return air ratio is arranged, reliable fresh air and return air ratio are selected according to the number of passengers in a vehicle and the temperature of outdoor environment, thereby meeting the sanitation requirement of the passengers in the vehicle and saving energy consumption.

Description

technical field [0001] The invention relates to an HVAC internal and external circulation damper for adjusting the ratio of fresh air and return air and an adjustment method thereof. Background technique [0002] There are two modes of air intake for existing automobile air conditioners: an external circulation air intake mode and an internal circulation air intake mode, and the only choice can only be made between the external circulation air intake mode and the internal circulation air intake mode. [0003] Automobile air conditioners must also meet hygiene requirements while satisfying refrigeration and heating. In order to ensure the cleanness of the air in the car, the air conditioner is usually turned on to the external circulation mode. In the cooling and heating load of the air conditioner, the fresh air occupies a large proportion. If all the fresh air is used, although the demand for hygiene is met, the waste of energy is serious. Contents of the invention [00...

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Problems solved by technology

[0004] The present invention designs an HVAC internal and external circulation damper that adjusts the ratio of fresh air and return air. The technical problem it solves is that the air intake modes of existing cars only have internal circulation mode and external circulation mode, so fresh air and return air cannot be selected according to people's needs. The proportion of entering, can not achieve the purpose of saving energy

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